Michael Sinclair, who previously worked for Marc Trestman on the Montreal Alouettes, was hired as assistant defensive line coach. He had been hired as the assistant head coach of the Saskatchewan Roughriders last month. An 11-year NFL veteran, he had 73 1/2 sacks in his career and went to three Pro Bowls for the Seahawks.

Michael Sinclair, who previously worked for Marc Trestman on the Montreal Alouettes, was hired as assistant defensive line coach. He had been hired as the assistant head coach of the Saskatchewan Roughriders last month. An 11-year NFL veteran, he had 73 1/2 sacks in his career and went to three Pro Bowls for the Seahawks. (Tami Tomsic, Getty Images)

Michael Sinclair, who previously worked for Marc Trestman on the Montreal Alouettes, was hired as assistant defensive line coach. He had been hired as the assistant head coach of the Saskatchewan Roughriders last month. An 11-year NFL veteran, he had 73 1/2 sacks in his career and went to three Pro Bowls for the Seahawks.